Answer
4
Explanation:
four rays can also explain the ray diagram if the object is at infinity
Answer:
is it 20kg. Two opposing forces pushing onto each other
Electromagnetic waves need no matter to travel - they can travel through empty space (a vacuum). In a vacuum, all electromagnetic waves travel at approximately 3 x 108 m/s - which is the fastest speed possible. ...
Light traveling value through an optical Fibre is, 2 x 108 m/s. Hope that helps.
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